Route53 Flashcards Preview

Amazon AWS Certified Solutions Architect Associate remix > Route53 > Flashcards

Flashcards in Route53 Deck (22)
Loading flashcards...
1
Q

Does Route53 require region selection?

A

No

2
Q

What is an A record?

A

Is the fundamental type of DNS record (A stands for Address). Translates a domain name to an its IP address.

3
Q

What is a CNAME record?

A

Canonical Name. It’s a record that can be used to resolve one domain name to another.

4
Q

What is an Alias record?

A

Alias Record are a record type created by Amazon for AWS, similar to CNAMEs, but with the difference

5
Q

How do you find the IP address for an ELB?

A

ELB’s do not have pre-defined IPv4 addresses, you resolve to them using a DNS name.

6
Q

Which one will be preferred “always”? A CNAME or an Alias record?

A

Always choose an Alias record over a CNAME

7
Q

How can you map a naked domain name (zone apex) to an ELB?

A

Using an Alias Record, which allows to resolve a naked domain name (a zone apex record) to an ELB DNS address.

8
Q

Are there charge differences between CNAMES and Alias record?

A

Yes. CNAMEs are charged, Alias records are free.

9
Q

What is the first step of using Route53?

A

Create a Hosted Zone

10
Q

What are the available routing policies in Route53?

A
Simple
Weighted
Latency
Failover
Geolocation
11
Q

How does the Weighted routing policy work?

A

Weighted Routing Policies let you split your traffic between regions based on different weights (traffic percentages) assigned (ex: 30% to US-EAST-1, 70% to US-WEST-1)

12
Q

How does the Latency routing policy work?

A

Latency based routing allows you to route your traffic based on the lowest network latency for your end user (i.e. which region will give them the fastest response time)

13
Q

How does the Failover routing policy work?

A

Failover routing policy are used when you want to create an active/passive set up (Route53 will monitor the health of the primary site using a health check)

14
Q

How does the Geolocation routing policy work?

A

Geolocation routing lets you choose where your traffic will be sent based on the geographic location of your users.

15
Q

Does Route53 supports MX records?

A

Yes (A, CNAME, MX, NS, SOA,…, AAAA, NAPTR, PTR, SPF, SRV and TXT)

16
Q

Why is Route53 named so?

A

The DNS port is 53

17
Q

Does Route53 support zone apex records? (naked domain names)

A

Yes

18
Q

Is there a limit in the number of domain names that you can manage using Route53?

A

There is a soft limit of 50 domain names, however this limit can be raised by contacting AWS support.

19
Q

How long can it take to register a domain?

A

up to 3 days

20
Q

How does a simple routing policy work?

A

one record with multiple IP’s. R53 will randomly return values

21
Q

Can you resolve an ELB by IP address?

A

No, it will always be a DNS name

22
Q

What happens if a record fails a health check?

A

record will be removed until it passes